The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2016
Filed:
Aug. 30, 2013
Ingersoll-rand Company, Davidson, NC (US);
Patrick Sean Livingston, Easton, PA (US);
Joseph Constantine Bouboulis, Asbury, NJ (US);
Douglas E. Pyles, Bethlehem, PA (US);
Gregory P. Albert, Nazareth, PA (US);
James F. Bouchard, Bethlehem, PA (US);
Ingersoll-Rand Company, Davidson, NC (US);
Abstract
In one illustrative embodiment, a grinder may comprise an arbor configured to rotate about a first axis and to support a grinding wheel for rotation therewith, a gear surrounding a first portion of the arbor and having a slip fit with the first portion of arbor, a motor configured to drive rotation of a drive train including the gear, a collar surrounding a second portion of the arbor and having an interference fit with the second portion of the arbor such that the collar is constrained for rotation with the arbor about the first axis, and at least one spring disposed between the gear and the collar and configured to exert a biasing force along the first axis such that one or more resulting friction forces cause the arbor to rotate with the gear when a torque exerted on the gear is less than a threshold torque.